Online Data Transfer Units Converter
How to Convert from IDE (UDMA mode 4) to IDE (UDMA mode 1)?
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How to Convert from IDE (UDMA mode 4) to IDE (UDMA mode 1)?

Learn how to convert data transfer units from IDE (UDMA mode 4) to IDE (UDMA mode 1). Understand these legacy Parallel ATA transfer modes and their typical applications in vintage hardware maintenance and diagnostics.

Please check your input. It must be a valid numeric value.

IDE (UDMA mode 4) to IDE (UDMA mode 1) Conversion Table

IDE (UDMA mode 4) IDE (UDMA mode 1)

Custom Unit Conversion Table Generator – Instant Printable Conversion Tables

Enter the starting number (positive decimal or integer ≥ 0). Example: 0.1, 1, 5.
Enter the ending number (positive decimal or integer > Start Value). Example: 10, 50, 100.
Enter the step size (positive decimal > 0 and < End Value – Start Value). Example: 1.0, 2.5.
IDE (UDMA mode 4) to IDE (UDMA mode 1) Conversion Table
IDE (UDMA mode 4) IDE (UDMA mode 1)

Explore More Data Transfer Units Converter

  1. How to convert from bit/second [b/s] to IDE (UDMA mode 4)?
  2. How to convert from IDE (UDMA mode 4) to bit/second [b/s]?
  3. How to convert from byte/second [B/s] to IDE (UDMA mode 4)?
  4. How to convert from IDE (UDMA mode 4) to byte/second [B/s]?
  5. How to convert from kilobit/second (SI def.) to IDE (UDMA mode 4)?
  6. How to convert from IDE (UDMA mode 4) to kilobit/second (SI def.)?
  7. How to convert from kilobyte/second (SI def.) to IDE (UDMA mode 4)?
  8. How to convert from IDE (UDMA mode 4) to kilobyte/second (SI def.)?
  9. How to convert from kilobit/second [kb/s] to IDE (UDMA mode 4)?
  10. How to convert from IDE (UDMA mode 4) to kilobit/second [kb/s]?
  11. How to convert from kilobyte/second [kB/s] to IDE (UDMA mode 4)?
  12. How to convert from IDE (UDMA mode 4) to kilobyte/second [kB/s]?
  13. How to convert from megabit/second (SI def.) to IDE (UDMA mode 4)?
  14. How to convert from IDE (UDMA mode 4) to megabit/second (SI def.)?
  15. How to convert from megabyte/second (SI def.) to IDE (UDMA mode 4)?
  16. How to convert from IDE (UDMA mode 4) to megabyte/second (SI def.)?
  17. How to convert from megabit/second [Mb/s] to IDE (UDMA mode 4)?
  18. How to convert from IDE (UDMA mode 4) to megabit/second [Mb/s]?
  19. How to convert from megabyte/second [MB/s] to IDE (UDMA mode 4)?
  20. How to convert from IDE (UDMA mode 4) to megabyte/second [MB/s]?
  21. How to convert from gigabit/second (SI def.) to IDE (UDMA mode 4)?
  22. How to convert from IDE (UDMA mode 4) to gigabit/second (SI def.)?
  23. How to convert from gigabyte/second (SI def.) to IDE (UDMA mode 4)?
  24. How to convert from IDE (UDMA mode 4) to gigabyte/second (SI def.)?
  25. How to convert from gigabit/second [Gb/s] to IDE (UDMA mode 4)?
  26. How to convert from IDE (UDMA mode 4) to gigabit/second [Gb/s]?
  27. How to convert from gigabyte/second [GB/s] to IDE (UDMA mode 4)?
  28. How to convert from IDE (UDMA mode 4) to gigabyte/second [GB/s]?
  29. How to convert from terabit/second (SI def.) to IDE (UDMA mode 4)?
  30. How to convert from IDE (UDMA mode 4) to terabit/second (SI def.)?
  31. How to convert from terabyte/second (SI def.) to IDE (UDMA mode 4)?
  32. How to convert from IDE (UDMA mode 4) to terabyte/second (SI def.)?
  33. How to convert from terabit/second [Tb/s] to IDE (UDMA mode 4)?
  34. How to convert from IDE (UDMA mode 4) to terabit/second [Tb/s]?
  35. How to convert from terabyte/second [TB/s] to IDE (UDMA mode 4)?
  36. How to convert from IDE (UDMA mode 4) to terabyte/second [TB/s]?
  37. How to convert from ethernet to IDE (UDMA mode 4)?
  38. How to convert from IDE (UDMA mode 4) to ethernet?
  39. How to convert from ethernet (fast) to IDE (UDMA mode 4)?
  40. How to convert from IDE (UDMA mode 4) to ethernet (fast)?
  41. How to convert from ethernet (gigabit) to IDE (UDMA mode 4)?
  42. How to convert from IDE (UDMA mode 4) to ethernet (gigabit)?
  43. How to convert from OC1 to IDE (UDMA mode 4)?
  44. How to convert from IDE (UDMA mode 4) to OC1?
  45. How to convert from OC3 to IDE (UDMA mode 4)?
  46. How to convert from IDE (UDMA mode 4) to OC3?
  47. How to convert from OC12 to IDE (UDMA mode 4)?
  48. How to convert from IDE (UDMA mode 4) to OC12?
  49. How to convert from OC24 to IDE (UDMA mode 4)?
  50. How to convert from IDE (UDMA mode 4) to OC24?
  51. How to convert from OC48 to IDE (UDMA mode 4)?
  52. How to convert from IDE (UDMA mode 4) to OC48?
  53. How to convert from OC192 to IDE (UDMA mode 4)?
  54. How to convert from IDE (UDMA mode 4) to OC192?
  55. How to convert from OC768 to IDE (UDMA mode 4)?
  56. How to convert from IDE (UDMA mode 4) to OC768?
  57. How to convert from ISDN (single channel) to IDE (UDMA mode 4)?
  58. How to convert from IDE (UDMA mode 4) to ISDN (single channel)?
  59. How to convert from ISDN (dual channel) to IDE (UDMA mode 4)?
  60. How to convert from IDE (UDMA mode 4) to ISDN (dual channel)?
  61. How to convert from modem (110) to IDE (UDMA mode 4)?
  62. How to convert from IDE (UDMA mode 4) to modem (110)?
  63. How to convert from modem (300) to IDE (UDMA mode 4)?
  64. How to convert from IDE (UDMA mode 4) to modem (300)?
  65. How to convert from modem (1200) to IDE (UDMA mode 4)?
  66. How to convert from IDE (UDMA mode 4) to modem (1200)?
  67. How to convert from modem (2400) to IDE (UDMA mode 4)?
  68. How to convert from IDE (UDMA mode 4) to modem (2400)?
  69. How to convert from modem (9600) to IDE (UDMA mode 4)?
  70. How to convert from IDE (UDMA mode 4) to modem (9600)?
  71. How to convert from modem (14.4k) to IDE (UDMA mode 4)?
  72. How to convert from IDE (UDMA mode 4) to modem (14.4k)?
  73. How to convert from modem (28.8k) to IDE (UDMA mode 4)?
  74. How to convert from IDE (UDMA mode 4) to modem (28.8k)?
  75. How to convert from modem (33.6k) to IDE (UDMA mode 4)?
  76. How to convert from IDE (UDMA mode 4) to modem (33.6k)?
  77. How to convert from modem (56k) to IDE (UDMA mode 4)?
  78. How to convert from IDE (UDMA mode 4) to modem (56k)?
  79. How to convert from SCSI (Async) to IDE (UDMA mode 4)?
  80. How to convert from IDE (UDMA mode 4) to SCSI (Async)?
  81. How to convert from SCSI (Sync) to IDE (UDMA mode 4)?
  82. How to convert from IDE (UDMA mode 4) to SCSI (Sync)?
  83. How to convert from SCSI (Fast) to IDE (UDMA mode 4)?
  84. How to convert from IDE (UDMA mode 4) to SCSI (Fast)?
  85. How to convert from SCSI (Fast Ultra) to IDE (UDMA mode 4)?
  86. How to convert from IDE (UDMA mode 4) to SCSI (Fast Ultra)?
  87. How to convert from SCSI (Fast Wide) to IDE (UDMA mode 4)?
  88. How to convert from IDE (UDMA mode 4) to SCSI (Fast Wide)?
  89. How to convert from SCSI (Fast Ultra Wide) to IDE (UDMA mode 4)?
  90. How to convert from IDE (UDMA mode 4) to SCSI (Fast Ultra Wide)?
  91. How to convert from SCSI (Ultra-2) to IDE (UDMA mode 4)?
  92. How to convert from IDE (UDMA mode 4) to SCSI (Ultra-2)?
  93. How to convert from SCSI (Ultra-3) to IDE (UDMA mode 4)?
  94. How to convert from IDE (UDMA mode 4) to SCSI (Ultra-3)?
  95. How to convert from SCSI (LVD Ultra80) to IDE (UDMA mode 4)?
  96. How to convert from IDE (UDMA mode 4) to SCSI (LVD Ultra80)?
  97. How to convert from SCSI (LVD Ultra160) to IDE (UDMA mode 4)?
  98. How to convert from IDE (UDMA mode 4) to SCSI (LVD Ultra160)?
  99. How to convert from IDE (PIO mode 0) to IDE (UDMA mode 4)?
  100. How to convert from IDE (UDMA mode 4) to IDE (PIO mode 0)?
  101. How to convert from IDE (PIO mode 1) to IDE (UDMA mode 4)?
  102. How to convert from IDE (UDMA mode 4) to IDE (PIO mode 1)?
  103. How to convert from IDE (PIO mode 2) to IDE (UDMA mode 4)?
  104. How to convert from IDE (UDMA mode 4) to IDE (PIO mode 2)?
  105. How to convert from IDE (PIO mode 3) to IDE (UDMA mode 4)?
  106. How to convert from IDE (UDMA mode 4) to IDE (PIO mode 3)?
  107. How to convert from IDE (PIO mode 4) to IDE (UDMA mode 4)?
  108. How to convert from IDE (UDMA mode 4) to IDE (PIO mode 4)?
  109. How to convert from IDE (DMA mode 0) to IDE (UDMA mode 4)?
  110. How to convert from IDE (UDMA mode 4) to IDE (DMA mode 0)?
  111. How to convert from IDE (DMA mode 1) to IDE (UDMA mode 4)?
  112. How to convert from IDE (UDMA mode 4) to IDE (DMA mode 1)?
  113. How to convert from IDE (DMA mode 2) to IDE (UDMA mode 4)?
  114. How to convert from IDE (UDMA mode 4) to IDE (DMA mode 2)?
  115. How to convert from IDE (UDMA mode 0) to IDE (UDMA mode 4)?
  116. How to convert from IDE (UDMA mode 4) to IDE (UDMA mode 0)?
  117. How to convert from IDE (UDMA mode 1) to IDE (UDMA mode 4)?
  118. How to convert from IDE (UDMA mode 4) to IDE (UDMA mode 1)?
  119. How to convert from IDE (UDMA mode 2) to IDE (UDMA mode 4)?
  120. How to convert from IDE (UDMA mode 4) to IDE (UDMA mode 2)?
  121. How to convert from IDE (UDMA mode 3) to IDE (UDMA mode 4)?
  122. How to convert from IDE (UDMA mode 4) to IDE (UDMA mode 3)?
  123. How to convert from IDE (UDMA-33) to IDE (UDMA mode 4)?
  124. How to convert from IDE (UDMA mode 4) to IDE (UDMA-33)?
  125. How to convert from IDE (UDMA-66) to IDE (UDMA mode 4)?
  126. How to convert from IDE (UDMA mode 4) to IDE (UDMA-66)?
  127. How to convert from USB to IDE (UDMA mode 4)?
  128. How to convert from IDE (UDMA mode 4) to USB?
  129. How to convert from firewire (IEEE-1394) to IDE (UDMA mode 4)?
  130. How to convert from IDE (UDMA mode 4) to firewire (IEEE-1394)?
  131. How to convert from T0 (payload) to IDE (UDMA mode 4)?
  132. How to convert from IDE (UDMA mode 4) to T0 (payload)?
  133. How to convert from T0 (B8ZS payload) to IDE (UDMA mode 4)?
  134. How to convert from IDE (UDMA mode 4) to T0 (B8ZS payload)?
  135. How to convert from T1 (signal) to IDE (UDMA mode 4)?
  136. How to convert from IDE (UDMA mode 4) to T1 (signal)?
  137. How to convert from T1 (payload) to IDE (UDMA mode 4)?
  138. How to convert from IDE (UDMA mode 4) to T1 (payload)?
  139. How to convert from T1Z (payload) to IDE (UDMA mode 4)?
  140. How to convert from IDE (UDMA mode 4) to T1Z (payload)?
  141. How to convert from T1C (signal) to IDE (UDMA mode 4)?
  142. How to convert from IDE (UDMA mode 4) to T1C (signal)?
  143. How to convert from T1C (payload) to IDE (UDMA mode 4)?
  144. How to convert from IDE (UDMA mode 4) to T1C (payload)?
  145. How to convert from T2 (signal) to IDE (UDMA mode 4)?
  146. How to convert from IDE (UDMA mode 4) to T2 (signal)?
  147. How to convert from T3 (signal) to IDE (UDMA mode 4)?
  148. How to convert from IDE (UDMA mode 4) to T3 (signal)?
  149. How to convert from T3 (payload) to IDE (UDMA mode 4)?
  150. How to convert from IDE (UDMA mode 4) to T3 (payload)?
  151. How to convert from T3Z (payload) to IDE (UDMA mode 4)?
  152. How to convert from IDE (UDMA mode 4) to T3Z (payload)?
  153. How to convert from T4 (signal) to IDE (UDMA mode 4)?
  154. How to convert from IDE (UDMA mode 4) to T4 (signal)?
  155. How to convert from E.P.T.A. 1 (signal) to IDE (UDMA mode 4)?
  156. How to convert from IDE (UDMA mode 4) to E.P.T.A. 1 (signal)?
  157. How to convert from E.P.T.A. 1 (payload) to IDE (UDMA mode 4)?
  158. How to convert from IDE (UDMA mode 4) to E.P.T.A. 1 (payload)?
  159. How to convert from E.P.T.A. 2 (signal) to IDE (UDMA mode 4)?
  160. How to convert from IDE (UDMA mode 4) to E.P.T.A. 2 (signal)?
  161. How to convert from E.P.T.A. 2 (payload) to IDE (UDMA mode 4)?
  162. How to convert from IDE (UDMA mode 4) to E.P.T.A. 2 (payload)?
  163. How to convert from E.P.T.A. 3 (signal) to IDE (UDMA mode 4)?
  164. How to convert from IDE (UDMA mode 4) to E.P.T.A. 3 (signal)?
  165. How to convert from E.P.T.A. 3 (payload) to IDE (UDMA mode 4)?
  166. How to convert from IDE (UDMA mode 4) to E.P.T.A. 3 (payload)?
  167. How to convert from H0 to IDE (UDMA mode 4)?
  168. How to convert from IDE (UDMA mode 4) to H0?
  169. How to convert from H11 to IDE (UDMA mode 4)?
  170. How to convert from IDE (UDMA mode 4) to H11?
  171. How to convert from H12 to IDE (UDMA mode 4)?
  172. How to convert from IDE (UDMA mode 4) to H12?
  173. How to convert from Virtual Tributary 1 (signal) to IDE (UDMA mode 4)?
  174. How to convert from IDE (UDMA mode 4) to Virtual Tributary 1 (signal)?
  175. How to convert from Virtual Tributary 1 (payload) to IDE (UDMA mode 4)?
  176. How to convert from IDE (UDMA mode 4) to Virtual Tributary 1 (payload)?
  177. How to convert from Virtual Tributary 2 (signal) to IDE (UDMA mode 4)?
  178. How to convert from IDE (UDMA mode 4) to Virtual Tributary 2 (signal)?
  179. How to convert from Virtual Tributary 2 (payload) to IDE (UDMA mode 4)?
  180. How to convert from IDE (UDMA mode 4) to Virtual Tributary 2 (payload)?
  181. How to convert from Virtual Tributary 6 (signal) to IDE (UDMA mode 4)?
  182. How to convert from IDE (UDMA mode 4) to Virtual Tributary 6 (signal)?
  183. How to convert from Virtual Tributary 6 (payload) to IDE (UDMA mode 4)?
  184. How to convert from IDE (UDMA mode 4) to Virtual Tributary 6 (payload)?
  185. How to convert from STS1 (signal) to IDE (UDMA mode 4)?
  186. How to convert from IDE (UDMA mode 4) to STS1 (signal)?
  187. How to convert from STS1 (payload) to IDE (UDMA mode 4)?
  188. How to convert from IDE (UDMA mode 4) to STS1 (payload)?
  189. How to convert from STS3 (signal) to IDE (UDMA mode 4)?
  190. How to convert from IDE (UDMA mode 4) to STS3 (signal)?
  191. How to convert from STS3 (payload) to IDE (UDMA mode 4)?
  192. How to convert from IDE (UDMA mode 4) to STS3 (payload)?
  193. How to convert from STS3c (signal) to IDE (UDMA mode 4)?
  194. How to convert from IDE (UDMA mode 4) to STS3c (signal)?
  195. How to convert from STS3c (payload) to IDE (UDMA mode 4)?
  196. How to convert from IDE (UDMA mode 4) to STS3c (payload)?
  197. How to convert from STS12 (signal) to IDE (UDMA mode 4)?
  198. How to convert from IDE (UDMA mode 4) to STS12 (signal)?
  199. How to convert from STS24 (signal) to IDE (UDMA mode 4)?
  200. How to convert from IDE (UDMA mode 4) to STS24 (signal)?
  201. How to convert from STS48 (signal) to IDE (UDMA mode 4)?
  202. How to convert from IDE (UDMA mode 4) to STS48 (signal)?
  203. How to convert from STS192 (signal) to IDE (UDMA mode 4)?
  204. How to convert from IDE (UDMA mode 4) to STS192 (signal)?
  205. How to convert from STM-1 (signal) to IDE (UDMA mode 4)?
  206. How to convert from IDE (UDMA mode 4) to STM-1 (signal)?
  207. How to convert from STM-4 (signal) to IDE (UDMA mode 4)?
  208. How to convert from IDE (UDMA mode 4) to STM-4 (signal)?
  209. How to convert from STM-16 (signal) to IDE (UDMA mode 4)?
  210. How to convert from IDE (UDMA mode 4) to STM-16 (signal)?
  211. How to convert from STM-64 (signal) to IDE (UDMA mode 4)?
  212. How to convert from IDE (UDMA mode 4) to STM-64 (signal)?

What Is This Tool?

This converter tool allows you to convert data transfer speeds between IDE (UDMA mode 4) and IDE (UDMA mode 1), two transfer modes used in the Parallel ATA interface for legacy computer storage devices. It helps evaluate and adjust transfer settings for older PATA hardware.

How to Use This Tool?

  • Enter the amount in IDE (UDMA mode 4) units.
  • Select the target unit IDE (UDMA mode 1).
  • Click convert to get the equivalent transfer rate.
  • Use the conversion results to understand relative throughput or adjust device settings.
  • Refer to example calculations for clarity.

Key Features

  • Converts between IDE (UDMA mode 4) and IDE (UDMA mode 1) transfer units.
  • Supports legacy data transfer modes for PATA hardware.
  • Easy to use and browser-based without software installation.
  • Provides practical values for configuring and troubleshooting vintage IDE drives.
  • Includes example calculations for quick reference.

Examples

  • 1 IDE (UDMA mode 4) equals 2.64 IDE (UDMA mode 1).
  • 3 IDE (UDMA mode 4) equals 7.92 IDE (UDMA mode 1) calculated as 3 multiplied by 2.64.

Common Use Cases

  • Configuring or troubleshooting BIOS DMA transfer modes on legacy desktop computers.
  • Benchmarking and maintaining older PATA/IDE storage devices in vintage systems.
  • Evaluating relative throughput capabilities for data recovery from legacy IDE drives.
  • Diagnosing compatibility and timing issues between IDE drives and controllers.

Tips & Best Practices

  • Ensure proper cable type (80-conductor IDE cable) for IDE (UDMA mode 4) to maintain reliable signaling.
  • Match UDMA mode selections according to drive and controller support to avoid data errors.
  • Use conversion results to guide BIOS or firmware configurations on older hardware.
  • Avoid mixing incompatible transfer modes when operating legacy PATA devices.

Limitations

  • Theoretical maximum transfer rates may be reduced by hardware and system factors.
  • Compatibility depends on controller and drive support; incorrect mode selection can cause errors.
  • Conversion only applies to Parallel ATA interfaces, not modern SATA or NVMe devices.

Frequently Asked Questions

What does IDE (UDMA mode 4) signify?
IDE (UDMA mode 4), also called Ultra DMA/66, is a Parallel ATA data transfer mode with a maximum theoretical speed of about 66.7 MB/s that requires an 80-conductor IDE cable for reliable operation.

Why would I convert IDE (UDMA mode 4) to IDE (UDMA mode 1)?
Users convert to IDE (UDMA mode 1) to evaluate or adjust transfer settings for compatibility or troubleshooting on legacy systems that require lower transfer rates.

Can this conversion be used for SATA or NVMe devices?
No, this conversion applies only to Parallel ATA (PATA) interfaces and is not applicable to SATA or NVMe storage technologies.

Key Terminology

IDE (UDMA mode 4)
A Parallel ATA transfer mode also known as Ultra DMA/66, offering a theoretical max throughput of about 66.7 MB/s using an 80-conductor cable.
IDE (UDMA mode 1)
An older Ultra DMA transfer mode of the Parallel ATA interface with a theoretical maximum rate of approximately 25 MB/s, used for timing and error-checking.
Parallel ATA (PATA)
A computer interface standard for connecting storage devices, commonly used in older IDE drives before the rise of SATA and NVMe.

Quick Knowledge Check

What is the approximate maximum throughput of IDE (UDMA mode 4)?
Which cable is required for reliable signaling with IDE (UDMA mode 4)?
To which storage interface does this conversion apply?

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